Ribbon-loom.



J-. HKUSERMANN. RIBBON LOOM. APPLIGATION FILED FBB.20, 1912.

1 72,944, Patented Sept. 9, 1913.

2 SHEETSSHEET 1.

% il /0107a] J. HIA'USERMANN.

RIBBON 1.00M.- APPLICATION FILED 313.20 1912.

Patented Sept. 9, 1913.

Z SHEETS'SHEET 2.

' J 506 flzzuerwzayzw I as lazeJJeJi- JITED STATES. PATENT orrucn JAKOBirl'iosnniviniv v, or STETTEN, ivnnn. tiimaon, GERMANY, ASSIGNOB TO THEFIRM or GEBR. srAUBLE, or HORGEN, cAiv'ron or ZURICH, swirznnnann.

RIBBON-L001.

To all wit-omit may concern:

Be it known that I, JAKOB HAUSERMANN,

a citizen of the SwissR-epublic, and resident of Stetten, near Liirrach,in the Grand Duchy of Baden, Germany, have" inyented new and usefulImprovements in Ribbonfull,

apparatus according to a fundamental shed ding motion by means of theordinary crosswise arranged shedding. cams, this cam gear being hithertoplaced in the lower part of the loom frame-work and being set intooperation when, they mode of operating the heddles' is to be changedfrom the dobby cont-rolled shedding tothe said cam conadvantages.

trolled shedding. In ishedding cam gears of this kind, there are,however, several dis- Firstly these gears are, from a constructionalpoint of view, extremely complicated; then again when the shed is toremain open during two, three, or more successive picks, it is necessaryto correspondingly alter the driving connection between the sheddingcam'gear andthe loom shaft as well as the arrangement of. the eccentricdisks or cams, whichrequiresthe expenditure of considerable time,labor'and material.

Now the present cam. shedding apparatus for ribbon looms, which as usualallows of the ordinary fundamental shedding motion (instead of the dobbycontrolled shedding motion) but this is distinguished from the ordinarycam gears of this kind in that its operation is automatically controlledby a pattern card having perforations according to the fundamentalshedding so that it may "be automatically brought into and'out of gearaccording to the pat-tern of said card. The whole construction of suchanarrangement is extremely simple. Owing to the control of the camshedding apparatus by means of a pattern card a simple means is at handwhereby according to the pattern of the card, when thecam sheddingapparatus is in gear, this latter may at anytime be temporarily put outof gear to allow the shed to remain open for any desired num-- ber ofpicks.

The accompanying drawings illustrate Specification of Letters Patent.

invention relates to a Patented Sept. 9,1913.

, Application filed February 20, 1912 Serial No. 678,962.

one constructional example of the subject of the present invention,which is here combined with a ribbon loom dobby apparatus and thiscombination allows of an especial simplicity of construction in that itallows of the use of the dobby treadles for the cam shedding operationand in that the card of the dobby may at the same time constitute thepattern card for the control of the cam shedding apparatus; however, thecam sheddlng apparatus could also be arranged independently of thedobby.

Figure 1 is a side view of the said dobby with its members in a firstposition. Fig. 2 is a longitudinal section through the dobby in theposition of the members shown in Fig. 1. Fig. 3 is asecond longitudinalsection showing a different positioning of .the parts. 4 is a side viewof the dobby similar to that shown in Fig. 1, but

showing a different position of the parts.

Fig. 5 shows a detailview of a ratchet and pawl mechanism.

1 is the frame of the dobby in which an oscillating shaft 3 providedwith a driving arm 2 (Fig. 1) is mounted. The oscillating shaft- 3carries further two beam-levers 4t which are connected by links 5 withthe two lifting blades 6 and 7. Connecting rods 8 are pivoted to thebeam-levers 4 and im: part the to and fro movement of the beamlevers topendulum levers 10 pivoted at 9. These levers 1O carry pins 11 whichengage incam slots 12 oftwo levers 14 pivoted at 13. The free ends ofthe levers Mare connected with the carrying rods .17 of the pattern cardcylinder 15 moving up and down of the corresponding hooks l9 advancedthrough the lower blade 6 and to allow these hooks 19 which have justbeen reached by the upper blade 7, to follow the then retreating upperblade 7 to which they have attached themselves, while all the otherhooks 19 drawn forward by the knife 6 are locked by the correspondinglevers 100 which have not been disengaged. The hooks 19 are connected tothe usual treadles 21. All but one of these treadles have the heddleshung upon them, their return movement, owing to the pull of the heddlesbeing llmited by means of a stopping bar 44.

Above the lifting hooks 19 the particular cam shedding device is mountedin the frame 1 of the clobby (Fig. 2). This consists of a plurality ofcrosswise arranged cams 34 mounted by pairs on a shaft 31, whichareslightly displaced relatively one to another and united in a solid wholeby means of bolts. The cams 34 are designed to cooperate with rollercarrying arms 38 which are connected to the treadles 21 necessary forthe fundamental shedding motion. The shaft 31 is hollow and slides upona revoluble shaft 42 by means of a groove and. key. The shaft 42 carriesa ratchet wheel 30 by which means at each stroke it is turned a quarterof a revolution, for which purpose a pawl 28 pivoted to a bell cranklever 32 cooperates with the ratchet wheel 30 in such a manner that ateach to and fro movement it moves the ratchet wheel one step forward.The bell crank lever 32 is driven by a rod 33 actuated by an eccentric(not shown) on the main shaft of the loom.

The free treadle 21, that is to say, that one on which no heddle ishooked, but which however is suitably weighted, has a pushing pawl 22pivoted to it which normally operates upon a ratchet wheel 23 revolublymounted within the frame 1. An unforeseen turning of the ratchet wheel23 is prevented by means of a spring controlled locking pawl 24. Theratchet wheel 23 is mounted upon a revoluble shaft 25 mounted in theframe-work 1, which shaft passes outside the framework and carries therea lifting cam 26 which supports a vertically guided controlling rod 27.The upper end of this controlling rod 27 is so arranged relatively tothe ratchet wheel 30 that it acts as a guide for the pawl 28 when thecontrol rod 27 is lifted, in such a mannerthat the pawl 28 at the nextfollowing return stroke cannot engage with the ratchet wheel 30 to moveit forward, whereby the shedding cams 34 will remain fixed in theposition they have taken up. If, on the other hand, the controlling rod27 falls, then it re leases the pawl 28'and this can then move the wheel30 and the shedding cams 34.

The operation of the controlling rod 27 depends on the position of thelifting cam 26 and the position of this latter depends upon the movementof the corresponding treadle 21 imparted to it by means of the pawl andratchet mechanism 22, 23. The position of the treadle 21 is controlledfrom the pattern card by means of the corresponding lifting hook 19, thecorrespond? placed suflicientlyto one side owing toythe shaft 31 slidingalong the shaft 42 so that they are withdrawn from the range of thetreadle arms 38. The card controls by means of the needles 18, thelevers100 and the lifting hooks 19, the movement of the heddles under thecontrol of thefllifting blades 6 and 7. As the operation .ofthese hooksand blades does notafi'ect the present invention it is not necessary todescribe these in further detail. .Should'now, for

a particular work, the-shedding beoperated by means of the cams 34(instead of the dobby), then the cams 34 are pushed into their operativeposition 'rel'ativeto the treadle arms 38, while'the card is replaced byanother so perforated thatthose hooks whose treadles 21 are nowmadedepen'dent upon the cam .shedding'gear, 'no longer work as regardsthe treadle movement, but

on the other hand that hook 19 which con- 7 trols the engaging anddisengaging of the cam shedding-gear and which is connected to the abovementioned heddleless counter-v weighted treadle 21, is operated'by thecard according to the wished for fundamental shedding operation. Thislatter hook will be called cam shedding hook in the following todifferentiateit from the others.

Consider that the machine lies ready for operation by means of the camshedding gear (Fig. 1). i The lever 32 moving to and fro moves each timethe shedding cams 34 forward by means of the pawl 28and the wheel 30 sothat the change of shed takes place according to the well known camshedding operation. If, now, during this mode of operationfthe carddisengages the lever corresponding to the cam shedding hook from thislatter, then this cam shedding hook (in a similar manner to theremaininghooks in the case of dobby control) which as above has been. reached bythe upper blade 7, goes back with this latter 'and then the treadle 21connected to it moves the pushing pawl 22 backward in order to bring itinto operatlve position relatively to the wheel 23.

During the next followingforward movement of the blade 6, the camshedding hookis again brought forward which causes the pawl 22 to beengaged with the wheel 23 in the manner shown in Fig. 3 and thereby thelifting cam 26 will be turned 90 from the position shown in Fig.1 tothat shown in Fig. 4.. Bythis means the controlling rod 27 is lifted tosuch an extent that it forms 'ai'guide for the continuously reciprotheposition into which it had last been brought so that one, two, or morepicks could take place, and this condition of affairs remains unaltereduntil the card causes a new disengagement of the cam shedding hook,which hook has meanwhile hooked itself upon the corresponding lockinglever 100, whereby in a similar manner as above stated a fresh movementof the wheel 23 takes place which causes the lifting cam 26 to again beturned into the position shown inFig. 1 in order to allow thecontrolling rod 27 to be lowered and to allow the pawl 28 to again comeinto engagement with the ratchet wheel 30 and operate the step by stepforward movement of the shedding cams 34. It may be seen from the abovethat the bringing into and out of operation of the shedding cam gear iscontrolled automatically from the card by means of the above mentionedfree hook or cam shedding hook.

The different positions of the shedding cams 34, when being inoperation, are secured by a locking spring 37 engaging with a lockingwheel 36 on the shaft d2.

IVhat I claim is:

1. In dobby apparatus for ribbon looms, the combination with heddleoperating members of a normally inoperative shedding cam gear capable ofbeing brought into an operative condition with regard to said heddleoperating members for the operation thereof, a driving mechanism forsaid shedding cam gear and an automatic, card controlled engaging anddisengaging device for said driving mechanism, substantially asdescribed.

2. In dobby apparatus for ribbon looms, the combination with heddleoperating members of a'normally inoperative shedding cam gear capable ofbeing brought into an operative condition with regard to said heddleoperating members for the operation thereof, a pawl and ratchetmechanism for driving said shedding cam gear and an automatic, cardcontrolled engaging and disengaging device for said driving mechanism,substantially as described.

3. In dobby apparatus for ribbon looms,

the combination with heddle operating members of a normally inoperativeshedding cam gear capable of being brought into an operative conditionwith regard to said heddle operating members for the operation thereof,a pawl and ratchet mechanism for driving said shedding cam gear, acontrolling member for the pawl of said mechanism to disengage it whenbeing lifted and to allow of its engagement with the ratchet when beinglowered, a rotary cam for lifting and lowering said controlling member,and card controlled means for causing intermittent rotation of saidrotary cam under the control of said card, substantially as described.

4. In dobby apparatus for ribbon looms, the combination with heddleoperating treadles of hooks connected thereto, recipro- I eating bladesfor operating said hooks, card controlled selecting means for selectingthe hooks to be operated, a shedding cam gear normally in inoperativecondition, but capable of being brought into an operative condition withregard to said treadles when they are to be operated without hookcontrol, a pawl and ratchet mechanism for driving said shedding camgear, a controlling member for the pawl of said mechanism to disengageit when being lifted and to allow of its engagement with the ratchetwhen being lowered, a rotary cam for lifting and lowering saidcontrolling member, and card controlled means for causing intermittentrotation of said rotary cam under the control of said card,substantially as described.

5. In ribbon looms, a dobby having heddle operating levers, an auxiliaryrotary shaft mounted in the frame of said dobby, a shedding cam gearslidably mounted on said shaft, being normally in inoperative position,but capable of being shifted into operative position with regard to saidheddle operating levers, a drive mechanism for driving said shedding camgear shaft independently of the dobby control, and an automatic cardcontrolled device for temporarily engaging and disengaging said drivemechanism, substantially as descrlbed.

In witness whereof I have hereunto signed my name this 2d day ofFebruary 1912, in the presence of two subscribing witnesses.

JAKOB HAUsERMANN.

\Vitnesses GEORGE GIFFORD, AMAND BBAUN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

I Washington, D. C.

